| A | B |
|---|
| classification | The process of grouping things based on their similarities. |
| taxonomy | The scientific study of how living things are classified. |
| binomial nomenclature | The naming system for organisms in which each organism is given a two-part name-- a genus name and a species name. |
| genus | A classification grouping that consists of a number of similar, closely related species. |
| species | A group of similar organisms whose members can mate with one another and produce fertile offspring. |
| taxonomic key | A series of paired statements that describe the physical characteristics of different organisms. |
| homologous structures | Body parts that are structurally similar in related species; provide evidence that the structures were inherited from a common ancestor. |
| branching tree | A diagram that shows how scientists think different groups of organisms are related. |
